John Calhoun Director, UW COENV SFR ONRC, Principal. Jason Cross, Presenter Research Coordinator, UW COENV SFR ONRC

Transcription

1 University of Washington College of the Environment School of Forest Resources Olympic Natural Resources Center Woody Biomass Assessment: Developing Investment Grade Feedstock Supply Data for the Olympic Peninsula Eric Turnblom Associate Professor, UW COENV SFR, Principal John Calhoun Director, UW COENV SFR ONRC, Principal Jason Cross, Presenter Research Coordinator, UW COENV SFR ONRC Conference Center at Convention Place Monday, November 8, 010

2 Research Question to be Answered: CLALLAM GRAYS HARBOR JEFFERSON MASON KITSAP If past timber harvest activity on the Olympic Peninsula is indicative of future activity, then how much residual biomass is being produced that could be utilized as an energy source for electricity production or for combined heat and power (CHP)? What are the costs to deliver this biomass to specified locations most likely to host such an operation?

3 Starters: Biomass Terminology Harvested Merchantable Wood Products 50% of all woody biomass in forest Total Residual Biomass 15% sustain ecological functions (unaccessible) Accessible Biomass 0-35% Determined by economic conditions Recoverable Biomass Remainder, determined by economic conditions Oneil, Elaine and Bruce Lippke Eastern Washington Biomass Accessibility. Report to the Washington State Legislature and Washington Department of Natural Resources. University of Washington Rural Technology Initialtive. 35pp.

4 How Much Wood is Needed and Available for Combined Heat & Power Energy Production? DEMAND FOR RECOVERABLE BIOMASS 1bdt 1 MWH (e) % 130 MWY 1.0 MM bdt

5 Private WEST Public Private EAST Public Two Sequential Projects: CALCULATE RESIDUE RATIOS coeff. var. CLEARCUT Determine 85% Sampling Strata East / West Sample Biomass Gross volume estimation for recoverable biomass (piles) Transects to estimate remaining available (unrecoverable) biomass x Moisture content of chipped pile Determine Pile Density Field operation experiment BUILD SUPPLY CURVES THINNING Select Market Centers Ground Cable Mixed Ground Cable Mixed V p Volume of slash pile measured on site prior to processing R Vc:Vp Ratio of slash pile volume to chipped pile volume measured in sort yard a M x = V p R Vc:Vp [1 - (a / 100)] [1 + (x / 100)] P b Aberdeen, WA Public / Private Forks, WA Thin / Clearcut Port Angeles, * WA Cable / Ground / Mixed Port Townsend, WA Air space in chipped pile determined from samples in lab determined from samples in lab P b Compute 13 Recoverable Biomass17 Base density of chipped material determined in lab (density of water Hardy, Colin C Guidelines for estimating volume, biomass, and smoke production base for specific piled slash. gravity) Gen. Tech. Rep. PNW-GTR-364. Portland, OR: USDA For. Svc. PNW Rsch. Stat. 17p. Shelton, WA * Determine Strata % Confidence: [0.304,0.39] 3 Kerstetter, J.D. and J.K. Lyons Logging and Agricultural Residue Supply Curves for the Pacific Northwest. Washington State University Energy Program. Report for the US DOE. Pullman, WA. 45pp.

6 Two Sequential Projects: CALCULATE RESIDUE RATIOS Determine Sampling Strata East / West Public / Private Thin / Clearcut CLALLAM Cable / Ground / Mixed Sample Biomass Gross volume estimation for recoverable biomass (piles) Transects to estimate remaining available (unrecoverable) biomass HARBOR Determine Pile Density Field operation experiment 1 GRAYS JEFFERSON 3 4 MASON 5 KITSAP Compute Recoverable Biomass Hardy, Colin C Guidelines for estimating volume, biomass, and smoke production for piled slash. Gen. Tech. Rep. PNW-GTR-364. Portland, OR: USDA For. Svc. PNW Rsch. Stat. 17p. BUILD SUPPLY CURVES Select Market Centers 1. Aberdeen, WA. Forks, WA 3. Port Angeles, WA 4. Port Townsend, WA 5. Shelton, WA Quantify Factors Quantity of residue In-woods cost of recovery Transportation to market centers Develop Supply Curves 5 mile radii increments to overlap. Kerstetter, J.D. and J.K. Lyons Logging and Agricultural Residue Supply Curves for the Pacific Northwest. Washington State University Energy Program. Report for the US DOE. Pullman, WA. 45pp.

7 Biomass Estimation Results can be Volume Ratio 0.41 Exported for use in Other Regions Compaction Factor Each Forest Practice Application within a specified geographic region can be stratified Moisture Content: In the absence of direct, region-specific calibrating measurements, assumptions can be made. Base Specific Gravity: Web delivery of query & results possible.

8 Level Feasibility Studies are Required to Support Investment Decisions The first step in developing a woodto-energy industry is reliable feedstock estimates. Uncertain feedstock estimates will result in under-utilization of the woody biomass resource. Improved region-specific supply information will limit the hype. It is important to note that biomass of the type we are investigating here is the icing on the cake; the cake itself is the timber harvested for merchantable wood products!